Why is my AC system freezing up?

There are a lot of reasons why your AC system freezes up.

Double-checking the air filter isn’t dusty and airflow isn’t lowered are the only work you can safely take care of on your own. If you need to put in a new the filter, you can speed up the melting process by disabling the unit and turning on the fan. If you have a heat pump, you can move it to heat mode until the ice has disappeared.

After the ice is gone, move the temp back to normal. If your system freezes repeatedly, contact Service Experts Heating & Air Conditioning to take care of the issue.

Here are a few other reasons why your unit could be freezing up.

Not enough refrigerant—A frozen system may be a result of a refrigerant leak.

What leads to a leak?

  • Fragile solder joints
  • Friction from piping jarring against other components
  • Ruptured valves
  • Loose fittings

How long your equipment has been working and the area of the leak play a part in whether you should repair or replace your AC system.

Dirty evaporator coil—Over time, the evaporator coil becomes dirty and causes issues resembling a dirty filter. You’ll gradually receive lower airflow until your system freezes or quits cooling. You’ll need to contact Service Experts Heating & Air Conditioning to fix the malfunction.

Malfunctioning blower motor or relay—A blower motor running at an incorrect speed or not running at all can create freezing. It may also be sporadic, starting at top speed and decelerating after it gets warm. Or a relay could cause it to start one time and not the following time. In either case, you will need to contact Service Experts Heating & Air Conditioning to correct the issue.

Requesting yearly AC maintenance can help you avoid this issue. Our technicians will comprehensively check and clean your equipment, which typically allows us to notice little troubles before they cause major problems.

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